Civil Engineering - Waste Water Engineering

1. 

A nuisance is experienced in diluting water if dilution factor is less than

A. 100
B. 60
C. 40
D. 20
E. 10

Answer: Option D

Explanation:

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2. 

Traps

A. are water seals which prevent the entry of foul gases
B. are used to trap the rats entering sewers
C. dissolve the foul gases
D. create syphonic action to increase the quick disposal of sewerage.

Answer: Option A

Explanation:

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3. 

For estimating the peak run off the rational formula Q = 0.0278 KpA was evolved by

A. Kinchling
B. Lloyd Davis
C. Frubling
D. all the above.

Answer: Option D

Explanation:

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4. 

Pick up the correct statement from the following :

A. Inlets are provided on the road surface at the lowest point for draining rain water
B. Inlets are generally provided at an interval of 30 m to 60 m along straight roads
C. Inlets having vertical openings, are called curb inlets
D. Inlets having horizontal openings, are called horizontal inlets
E. All the above.

Answer: Option E

Explanation:

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5. 

Pick up the correct statement from the following :

A. The boning rod is used for checking the levels of the sewer inverts
B. Manhole covers are made circular for the convenience of the cleaning staff
C. A manhole is classified as deep manhole if its depth is more than 1.5 m
D. A manhole is classified as shallow manhole if its depth is. less than 0.9 m
E. All the above.

Answer: Option E

Explanation:

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